Drying apparatus.



J H. DUNCAN. DRYING APPARATUS.

P I APPLICATION FILED AUG.18, 1908. 991,559

Patented Mar. 8, 1910.

2 SHEETS-SHEET 1.

WITNESSES:

, l ENTOR ATTORNEYS J. H. DUNCAN. DRYING APPARATUS. APPLICATION FILEDAUG. 18, 1908,

Patented Mar. 8, 19% 0.

2 SHEETS-SHEBT 2.

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IVENTOR (j a/pbwv B'v @0701 a ATTORNEYS wmvgssas:

JOHN H. DUNCAN, or terrace, NEW YORK.

DRYING APPARATUS.

Specification of Letters Eatent.

resented Mar. 8, isle.

Application filed August 18, 1908. Serial No. 449,026.

To all whom it may concern:

Be it known that I, JOHN H. DUNCAN, of Ithaca, in the county of Tompkinsand State of New York, have invented a certain new and useful DryingApparatus, of which the following is a specificat on.

M invention has for its object the productlon of a simple and efiicicntapparatus for dr ing precipitates, articularly applicable or dryingsalt; an it consists in the combinations and constructions hereinafterset forth and claimed.

In describing this invention, reference is had to the accompanyingdrawing in which like characters designate corresponding parts in. allthe views.

Figure l is an elevation of my apparatus, the sup orts for the vacuumpan, drying receptac e, and other parts being omitted.

Fig. 2 is a vertical sectional view of the drying receptacle.

As illustrated, this apparatus for drying precipitates comprises avacuum pan, and a drying receptac e for the precipitate, the dryingreceptacle being connected to the vacuum pan so that thesaturated-liquor is drawn from precipitate in the drying receptacle intothe vacuum pan.

1 is a vacuum or evaporating pan in is placed. c

2 is a pipe in whichsuction is produced, this pipe being connected tothe pan 1 to normally produce a vacuum therein, and to 35 a suctionpump, 2 is provided with valves 3 and t spaced apart along the pipe, andis connected to the drying receptacle hereinafter described.

' The'vacuum or evaporating pan 1 may be supported in any suitablemanner and may be of any desirable form, size and construction, and asthe construction of said pan and its support forms no part of thisinvention, further description or illustration thereof is deemedunnecessary.

5 is a drying receptacle for the material,

as salt crystals, precipitated in the pan 1, and this means forconveying the preci 'itate from the pan 1 to the drying receptacle.

9 The. conveying means 6 may be of any desirable form, size andconstruction.

' The drying receptacle 5 is supported in any suitable manner, ispreferably bellshaped or larger at its lower end than at its upper, andis formed with a neck 7 at its top-and with a movable bottom 8. Saidwhich the liquor tojbe evaporated,.as brine,

not illustrated. Said pipe neck 7 is provided with a hopper 9, arrangedbeneath the exit 10 of the conveying means, and with a valve 11. Saidreceptacle is also provided with a'substantially horizontal perforatedpartition 12. As

shown this partition 12 is carried by the movable bottom 8 in order thatwhen the bottom is moved out of its normal position, the partition willalso be carried therewith. for permitting the salt or other precipitateto be removed from the receptacle.

The movable bottom 8 swings laterally out of its normal position on anupright pivot 13, the axis of which is located outside of, or eccentricto, the receptacle 5, and said bottom is formed withdownwardly-converging Walls 14; arranged below and spaced apart from thepartition 12 and with an outlet 15 at the lowest portion thereof, theaxis of the outlet being substantially coincident with the axis of thepivot 13. Said bottom is held in its closed position by fasteningmembers or clamps 1G, each'oi' which extended vertically'through alinedcutouts 17,18 formed, respectively, in an outwardly-extending flange 19at the lower end of the major partyof the receptacle 5 and in the margin20 of the movable bottom, each fastening member 16 having a shoulder asa nut 21 at its lower end, which engages the lower face of the margin 20of the bottom 5, and each. member 16 being connected at its upper end tocam 22 which bears on the upper face of the flange l9 and which operatesto move said member 16 endwise. The pivot 13 is also provided with a nut21 .at its lower end and with a cam 22 at its upper end. The bottom isalso provided with rollers 23 which are carried by brackets 24; andwhich engage an arc-shaped track 25 when the bottom is moving into orout 0t its normal position this track 25 being, concentric with thepivot 13. The outlet 15 of the bottom is connected to the vacuum pan 1in order that the saturated liquor in the receptacle may be drawn hroughthe perforated partition 12 and returned to the vacuum pan 1 by thevacuum in said pan; and here illustrated, said outlet 15 is connected bya pipe 26 to the suction pipe it,

between the valves 3 and 4 in the suction pipe this outlet ppe 26 beingprovided with a valve 2?. The joint between. the outlet15 and theoutletpipe 2G is of such construction as to permit the outlet 15 to turnor swivel in the outlet pipe 26, and as shown the out too bushing 30 islocated between the outlet 11' into the receptacle ally and the dryprecipitate is and the inner face of said outlet pipe.- Means as a. pipe31, which is connected to a compressor tank 32, is provided, for co.uducting a drying fluid, as compressed err, to the receptacle ,5, saidpipe being provhiled with a valve for controlling the {low of airtherethrough, and being connected to the drying receptacle 5 at the topthereof.

In operation, when the receptaclebeing filled with the precipitate, thevalves 3 and l-in the suction pipe are opened in order-that a'vacuum maybe maintained in the evaporating pan 1, the valve 11 in the neck 7of'the receptacle is opened, and the valves 27 and located,respectivr-sly, in the outlet pipe 26 of the receptacle 5 and in thecompressed 'air pipe 31, are closed. When the receptacle 5 is filled,the valve ll is partly closed, the valve 27 in' the outlet. pipe .26isopened, the valve. 25in the suction pipe 2 between the vacuumpan andthe outlet pipe 26 is left open, and the valve at in the suction pipe 2is closed, thereby permitting the moisture and saturated liquor to bedrawn from the drying receptacle 5 intc the vacuun'r pan l by the vacuumin said pan.

The saturated liquor having," been drawn oil from the receptacle L thevalve 37 in the outlet pipe 26 remains open, the valve 3 and the valve11 are closed, and the valves t and 33 located, respectively, viln-tliesuction pijc 2 between the outlet pipe 2'? and the vineuiun pump, and inthe compressed air pipe ll. are opened, so that comprcs l air, whichusually has been previously heated, passes and through lhe pro- Ucipitate therein, thus drying the 1::rcclpita and then passes out of theeceptaclc .3, through the outlet pipe to the pump. After the dryingoperation is pleted, the movable bottom swung lateruuiped into carts orother convcyers.

My apparat s is particularly advantageous in. that the sa tureted liquoris returned to the vacuum pan directly from the drying receptacle, andfurther in' that the salt or precipitate can be dried and prepared :t'crshipment, much more quickly and eccnoi'uically than by methodshcilctofore in use.

What I claim is:

1. The combination of a vacuum pan, a pipe in which suction is produced,con nected to said pan for creating a vacuum therein, a valve in saidpipe, a drying receptacle for the material precipitated in said pan,means for conveying the precipitate from the vacuum pan to the dryingreceptacle, and an outlet pipe for the liquor drawn from the precipitatein the receptacle, said outlet pipe connecting the drying receptacle andthe suction pipe, and communicating with the sucticnpipe at a pointbetween said vacuum pen said valve, substantially as and for the purposeforth. l.

The combination of a vacuiis. pen, a drying receptacle i: r materialprecipitated in said pan, said receptacle havi. outlet, inc-ens to;conveying the from the vacuum pen. the d tacle, and means for condiu adeg/mg fluid tc the recepttuzle, l ltlilimul ially as and for thepurpose described.

3. The combination or. vacuum pan, a pipe in which suction is produced,ccnnectcc to said pen, a drying; receptacle for the materialprecipitated in u}. pen, means for conveying the pre itate from thevacuum pan to the divine receptacle,

outlet for the liqul'ir drawn from precipitate in the. receptacle, saidoliltlet -cnnecting the drying rc-cptacle and t 5;, and mean? contluc indrying lilllk to the rcccpt e, substas. l "For the "urpcsc set .lJl' ilL'tmation of a vacuum pan, pipe in whn. tuition to said pan creatin avacuum therein, a valve in said p a tlr iug receptr-icle for thematerial pro .p atcd in id pan, means for conveying the precipitate fromthe vacuum pan to the drying receptacle, an outlet pipe for ll irecipit1c in the rec p" i connec the w sueticn pipe. and suction pipe at apoint pan and lid valve, and iii-cans tifcr cor mg a drying l'llllfl toth tially as and for the g 53. The coi'z'ibination a vac um. pa pipe inn h :n. suction is produced, COHDL to said pan for creating a Viewtherein, valves in said pip t valves heing spa ed a drying tov'ecipiturtcd in a produced, connected liquor drawn from the said outletpipe 2 a d the the between J id vacuum tacl 53 lit? (ll H 391M119, apecounse ing suction pr suction pipe tween. the valves, and means at apoint for conducting a dryingtluid to the reach tacle, substantially asand for the purpose described. i

G. The combination of a vacuum pen, a

' pipe in which Jfiillflll is produced, connected to said pan forcreating a vacuum therein, valves in said pipe, the valves being spacedapart, dryi precipitated in d (pan, inesns for conveying the pron, cmthe vacuum pen to the drying receptacle, an outlet pipe for receptaclethe material 1 the liquor drawn from the precipitate in the receptacle,said outlet pipe connecting 1 the drying receptacle. and the suctionpipe, and ceimnumcntmg with the suction pipe at;

the outlet pipe, and means for conducting 2r drying fluid. to the.i'eceptacle, substantially as and for the purpose set forth. 7. Inanepperatus for drying precipitotes, e drying receptacle having anoutlet for the liquor drawn-from the precipitate therein, a pipe 111WlllCll suctlon is produced,

:1 point between the valves, a valve in i having a bottom movablelaterally into 22ml out of its normal POSltlUI]; about an upright axislocated eccentric to the receptacle, suirl 1 bottom being formed with(lUVIIHVlZ'tllIY-COlk l verging walls, and with a Ycrticzal upright 5outlet at the lowest portion. of sriul the outlet, having its arrangeduru-11nconnected to the outlet of the receptacle, and

means for conducting a drying fluid to the receptacle, substantially asand for the pur pose set foigth.

o. in an apparatus for drying pi'ccipititles, a drying receptacle havinga perfo- 1 rated partition, an outlet at one side of the partitioii, apipe in which suction is proi diiced, connected to the outlet, and meansfor conducting a drying lluicl to the receptacle,

Sttid means communicating with the rcccp 1 mole at the othersitle of thepartition, substantially and for the purpose specilietl A dryingreceptaclevfor precipitates, having a movable bottom l'oriiierl withdown: wardly-converging walls, iitl also having a I tom the rec verticalupright outlet at the lowest portion of said wall, and a perforatedpartition carried by the bottom and Sptl C the converging walls, euiis.fo: the purpose described.

l( A drying receptacle for having a bottom l'lbilVillilL its hornmlposition about located ec entric o ti bottom lacing fo 1 i '1 apart fromally :mrl

preci itates, laterally out ol an upright axis receptacle, till. saitlea i an) outlet. her: lab axis air-ranged substantially coincident with.the axis and for the purpose set forth.

ill. A drying receptacle for precipitates,

of said bottom subetantiell W 7 pipe in which suction produced, eon,

llzilly coincident with the axis oi. thebot-- tom, substantially we andfor the pin-poet 12. The eonibiimti m of a vacuum pen, a

etl to said pain, valves: in seitl pipe the val being spaced apart, adrying ,rccept; '3 "tor the materialprecipitated in said pin saidreceptacle having an inlet 11 1 its top, ii rim;- able bottom l'invin"m1 outlet, anal it peifl'orated partition :11 2 between ,uiil inlet. andsaid outlet, :1 rah A in :wzii ll lllii ii'or conveying the pi'cipilzitcum pan to the inletof the outlet pipe cooivci ng the on 29th (la ofFebrile

